How to embed this javascrip into Mathematica with a single input - javascript
In my research, I need to generate Fricke Polynomials. Luckily the job has been done for me on a website. However, it is in javascript+html+css so I am not sure how it works as I only use Mathematica. I was wondering if anyone could explain how I could make all of this work on a single javascript code with a single input (and where to put the input). My plan is then to just take the code and embed it in Mathematica as I have seen this is possible. The input is a word say made up of a's and b's say aabbbaa and an output is a polynomial. I do not need to understand the code really.
Thank you
function Polynomial(){
this.data = "";
this.setData = function(str){
this.data = str;
}
this.toString = function(){
var s = this.data;
if (this.data.startsWith("x0y0z0"))
s = s.replace("x0y0z0", "1");
s = s.replace(/x0y0z0/g, "")
.replace(/\s\+\s-/g, "</sup> - ").replace(/\s\+/g, "</sup> +")
.replace(/x/g, "x<sup>").replace(/y/g, "</sup>y<sup>")
.replace(/z/g, "</sup>z<sup>")
.replace(/\s1x/g, " x").replace(/\s1y/g, " y").replace(/\s1z/g, " z");
s += "</sup>";
s = s.replace(/x<sup>0<\/sup>/g, "").replace(/y<sup>0<\/sup>/g, "")
.replace(/z<sup>0<\/sup>/g, "")
.replace(/x<sup>1<\/sup>/g, "x").replace(/y<sup>1<\/sup>/g, "y")
.replace(/z<sup>1<\/sup>/g, "z");
if (s.startsWith("1x"))
s = s.replace("1x", "x");
if (s.startsWith("1y"))
s = s.replace("1y", "y");
if (s.startsWith("1z"))
s = s.replace("1z", "z");
return s;
}
}
function compareMonomial(m1, m2){
m1s = m1.split(/[x|y|z]/g);
m2s = m2.split(/[x|y|z]/g);
if (m1s[3]< m2s[3]) return -1;
else if (m1s[3] > m2s[3]) return 1;
else if (m1s[2]< m2s[2]) return -1;
else if (m1s[2] > m2s[2]) return 1;
else if (m1s[1]< m2s[1]) return -1;
else if (m1s[1] > m2s[1]) return 1;
else return 0;
}
function addMonomial(m1, m2){
m1s = m1.split(/[x|y|z]/g);
m2s = m2.split(/[x|y|z]/g);
coef = parseInt(m1s[0]) + parseInt(m2s[0]);
if (coef == 0)
return "ZERO"
else
return coef + "x" + m1s[1] + "y" + m1s[2] + "z" + m1s[3];
}
function subMonomial(m1, m2){
m1s = m1.split(/[x|y|z]/g);
m2s = m2.split(/[x|y|z]/g);
coef = parseInt(m1s[0]) - parseInt(m2s[0]);
if (coef == 0)
return "ZERO";
else
return coef + "x" + m1s[1] + "y" + m1s[2] + "z" + m1s[3];
}
function mulMonomial(m1, m2){
m1s = m1.split(/[x|y|z]/g);
m2s = m2.split(/[x|y|z]/g);
coef = parseInt(m1s[0]) * parseInt(m2s[0]);
coefx = parseInt(m1s[1]) + parseInt(m2s[1]);
coefy = parseInt(m1s[2]) + parseInt(m2s[2]);
coefz = parseInt(m1s[3]) + parseInt(m2s[3]);
if (coef == 0)
return "ZERO";
else
return coef + "x" + coefx + "y" + coefy + "z" + coefz;
}
function add(p1, p2){
if (p1.data == "")
return p2;
if (p2.data == "")
return p1;
var r = new Polynomial();
p1Mos = p1.data.split(" + ");
p2Mos = p2.data.split(" + ");
var data = "";
var k = 0; var current = p1Mos[0];
for (var i = 0; i < p2Mos.length; i++){
if (k >= p1Mos.length)
data += " + " + p2Mos[i];
else {
while (k < p1Mos.length && compareMonomial(current, p2Mos[i]) < 0){
data += " + " + p1Mos[k]; k++; current = p1Mos[k];
}
if (current == undefined)
data += " + " + p2Mos[i];
else if (compareMonomial(current, p2Mos[i]) == 0){
if (addMonomial(current, p2Mos[i]) != "ZERO")
data += " + " + addMonomial(current, p2Mos[i]);
k++; current = p1Mos[k];
}
else{
data += " + " + p2Mos[i];
}
}
}
while (k < p1Mos.length){
data += " + " + p1Mos[k]; k++
}
r.setData(data.substring(3));
return r;
}
function sub(p1, p2){
if (p2.data == "")
return p1;
if (p1.data == ""){
//need to update here
return p2;
}
var r = new Polynomial();
p1Mos = p1.data.split(" + ");
p2Mos = p2.data.split(" + ");
var data = "";
var k = 0; var current = p1Mos[0];
for (var i = 0; i < p2Mos.length; i++){
p2coef = p2Mos[i].split(/[x|y|z]g/)[0];
if (parseInt(p2coef) < 0)
p2MoNeg = p2Mos[i].substring(1);
else
p2MoNeg = "-" + p2Mos[i];
if (k >= p1Mos.length)
data += " + " + p2MoNeg;
else {
while (k < p1Mos.length && compareMonomial(current, p2Mos[i])< 0){
data += " + " + p1Mos[k]; k++; current = p1Mos[k];
}
if (current == undefined)
data += " + " + p2MoNeg;
else if (compareMonomial(current, p2Mos[i]) == 0){
if (subMonomial(current, p2Mos[i]) != "ZERO")
data += " + " + subMonomial(current, p2Mos[i]);
k++; current = p1Mos[k];
}
else{
data += " + " + p2MoNeg;
}
}
}
while (k < p1Mos.length){
data += " + " + p1Mos[k]; k++
}
r.setData(data.substring(3));
return r;
}
// multiply polynomial p1 (with array of monomials p1Mos) with a monomial m2
function mulPM(p1Mos, m2){
r = new Polynomial();
var data = "";
for (var i = 0; i < p1Mos.length; i++){
if (mulMonomial(p1Mos[i], m2) != "ZERO")
data += " + " + mulMonomial(p1Mos[i], m2);
}
r.setData(data.substring(3)); return r;
}
// multiply polynomial p1 with polynomial p2
function mul(p1, p2){
p1s = p1.data.split(" + ");
p2s = p2.data.split(" + ");
r = new Polynomial();
for (var i = 0; i < p2s.length; i++){
r = add(r, mulPM(p1s, p2s[i]));
}
return r;
}
function Fricke(s){
var w = new Word();
w.setWordString(s);
w.reduce(); s = w.toString();
var r = new Polynomial();
var l = s.length;
// Trivial case or case where 2 consecutive letters among last 4 letter
// are the same
if (l == 0){
r.setData("2x0y0z0");
return r;
}
if (l == 1){
if (s == "a" || s == "A")
r.setData("1x1y0z0");
else
r.setData("1x0y1z0");
return r;
}
if (s.charAt(l-1) == s.charAt(l-2)){
var c = s.charAt(l-1);
var s1 = s.substring(0, l-2);
r = sub(mul(Fricke(s1 + c), Fricke(c + "")), Fricke(s1));
return r;
}
if (l == 2){
if (s == "ab" || s == "ba" || s == "AB" || s == "BA"){
r.setData("1x0y0z1");
return r;
}
else if (s == "aB" || s == "Ba" || s == "Ab" || s == "bA"){
r.setData("1x1y1z0 + -1x0y0z1");
return r;
}
}
if (s.charAt(l-2) == s.charAt(l-3)){
s = s.charAt(l-1) + s.substring(0, l-1);
r = Fricke(s);
return r;
}
if (l == 3){
s = s.charAt(l-1) + s.substring(0, l-1);
r = Fricke(s);
return r;
}
if (s.charAt(l-3) == s.charAt(l-4)){
s = s.substring(l-2, l) + s.substring(0, l-2);
r = Fricke(s);
return r;
}
// Case 2: w = x1Yx2y
var t = s.charCodeAt(l-1) - s.charCodeAt(l-3);
if ( t == 32 || t == -32){
var w1 = new Word();
w1.setWordString(s.substring(l-2, l));
var s2 = s.substring(0, l-2) + w1.bar().toString();
r = sub(mul(Fricke(s.substring(0, l-2)), Fricke(s.substring(l-2, l))),
Fricke(s2));
return r;
}
// Case 3: w = ...Xyxy
t = s.charCodeAt(l-2) - s.charCodeAt(l-4);
if ( t == 32 || t == -32){
r = Fricke(s.charAt(l-1) + s.substring(0, l-1));
return r;
}
// Last case 4: w = ...xyxy
r = sub(mul(Fricke(s.substring(0, l-2)), Fricke(s.substring(l-4, l-2))),
Fricke(s.substring(0, l-4)));
return r;
}
// Helper methods:
function cancel2Char(src, i){
dest = [];
for (var j = 0; j < i; j++)
dest[j] = src[j];
for (var j = i; j < src.length - 2; j++)
dest[j] = src[j+2];
return dest;
}
function trim2Ends(src){
dest = [];
for (var j = 1; j < src.length - 1; j++)
dest[j - 1] = src[j];
return dest;
}
// Function to find the minimum equivalent class of a reduced cyclic word rc.
function minReduceCyclic(rc){
var min = rc.clone();
var W = new Word();
for (var i = 0; i < rc.word.length; i++){
W = rc.permute(i);
if (min.compareTo(W) > 0)
min = W;
}
return min;
}
function canonical(W){
W.reduce();
W.toReduceCyclic();
W = minReduceCyclic(W);
return W;
}
// CLASS Word
function Word(){
this.word = [];
this.setWord = function(w){
this.word = w;
}
this.setWordString = function(s){
// a-z = 1-26 && A-Z = -1 - -26;
for (var i = 0; i < s.length; i++){
var c = s.charCodeAt(i);
if (c >= 65 && c <= 90 )
this.word[i] = -(c - 64);
else if (c >= 97 && c < 122)
this.word[i] = c - 96;
else {
this.word = []; return;
}
}
}
this.length = function(){ return this.word.length; }
}
Word.prototype.isReduce = function(){
for(var i = 0; i < this.word.length - 1; i++)
if (this.word[i] == -this.word[i+1])
return false;
return true;
}
Word.prototype.reduce = function(){
var i = -2;
while(i != this.word.length - 1){
if (this.word.length == 0)
return;
for(i = 0; i < this.word.length - 1; i++)
if (this.word[i] == -this.word[i+1]){
this.word = cancel2Char(this.word, i);
break;
}
}
return;
}
Word.prototype.toReduceCyclic = function(){
this.reduce();
while(this.word[0] == -this.word[this.word.length - 1])
this.word = trim2Ends(this.word);
return;
}
Word.prototype.toString = function(){
var s = "";
for (var i = 0; i < this.word.length; i++){
if (this.word[i] < 0)
s = s + String.fromCharCode(-this.word[i] + 64);
else
s = s + String.fromCharCode(this.word[i] + 96);
}
return s;
}
Word.prototype.bar = function(){
var r = new Word();
var w = r.word;
for (var j = 0; j < this.word.length; j++)
w[j] = - this.word[this.word.length - 1 - j];
return r;
}
Word.prototype.permute = function(i){
var r = new Word();
var w = r.word;
for (var j = 0; j < this.word.length; j++)
w[j] = this.word[(j + i) % this.word.length];
return r;
}
Word.prototype.isEqual = function(W2){
var w1 = this.word;
var w2 = W2.word;
if (w1.length != w2.length)
return false;
for (var i = 0; i < w1.length; i++)
if (w1[i] != w2[i])
return false;
return true;
}
Word.prototype.compareTo = function(W2){
var w1 = this.word;
var w2 = W2.word;
var l = Math.min(w1.length, w2.length);
for (var i = 0; i < l; i++){
if (w1[i] < w2[i])
return -1;
if (w1[i] > w2[i])
return 1;
}
if (w1.length > w2.length)
return 1;
if (w1.length < w2.length)
return -1;
return 0;
}
Word.prototype.clone = function(){
var r = new Word();
w = r.word;
for (var i = 0; i < this.word.length; i++)
w[i] = this.word[i];
return r;
}
Word.prototype.primitiveExp = function(){
w = this.word; l = w.length;
for(var i = 1; i <= l/2; i++){
if (l % i == 0){
found = true;
test:
for (var j = 0; j < l/i; j++)
for (var t = 0; t < i; t++)
if (w[t] != w[t + j * i]){
found = false;
break test;
}
}
if (found)
return l/i;
}
return 1;
}
// Need to debug
function concat(W1, W2){
r = new Word();
var w1 = W1.word;
var w2 = W2.word;
var w = []
for (var i = 0; i < w1.length; i++)
w[i] = w1[i];
for (var i = 0; i < w2.length; i++)
w[i + w1.length] = w2[i];
r.setWord(w);
return r;
}
// These are supposed to be surface word methods
// sw is a word and the order is a map, which
// maps characters in a word (1-k or (-1)-(-k)) to its order in the alphabet
function order(sw){
var w = sw.word;
var o = new Map();
for (var i = 0; i < w.length; i++)
o.set(w[i], i);
return o;
}
function findCharPos(sw, c){
for (var i = 0; i < sw.word.length; i++)
if (sw.word[i] == c)
return i;
}
var time;
$(document).ready(function(){
$("#compute").click(function(){
$("#note").text("Note: Computing.....");
time = new Date().getTime();
setTimeout(function(){
new Promise(compute).then(doneCompute("Note: Done! The computation time is about "));
}, 50);
});
$("#reset").click(function(){
$("#note").text("Note:");
$("#word").val("");
$("#fpOutput").text("");
});
});
function compute(value){
$("#fpOutput").html(Fricke($("#word").val()).toString());
$("#fpOutput").slideDown("slow");
}
function doneCompute(value){
$("#note").text(value + (new Date().getTime() - time - 50) + " milliseconds.");
}
<!DOCTYPE html>
<html>
<head>
<link href="fricke.css" type="text/css" rel="stylesheet" />
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.8.3/jquery.min.js"></script>
<script type="text/javascript" src="Word.js"></script>
<script type="text/javascript" src="Polynomial.js"></script>
<script type="text/javascript" src="gui.js"></script>
</head>
<body>
<h2>Computing Fricke Polynomial for word with 2 generators a and b</h2>
<br>
<b>Word: </b>
<input type="text" class="inputText" id="word"></input><br><br>
<br><br>
<button class="button" id="compute">Compute</button>
<button class="button" id="reset">Reset</button>
<br><br>
<div id="note">Note:</div>
<br><br>
<div class="slide">Fricke Polynomial</div>
<div class="output" id="fpOutput"></div>
</body>
</html>
Related
I am trying to make a content editable div that has syntax highlighting
I am trying to make a contenteditable div that has syntax highlighting, but when I type, the cursor is fixed and text flows backwards. Please help me. What did I do wrong? I tried changing the direction of text, that didn't work out well. Also, when I type < after typing a few chracters, it clears the whole div!
Any answer is highly appreciated.
Thanks in advance!
P.S. Below is the code
var div = document.getElementById("myDiv");
div.oninput = function () {
this.innerHTML = this.textContent.replace("<", "<");
text = document.getElementById("myDiv");
syntaxHighlight(text);
}
function syntaxHighlight(elmnt, mode) {
var lang = (mode || "html");
var elmntObj = (document.getElementById(elmnt) || elmnt);
var elmntTxt = elmntObj.innerHTML;
var tagcolor = "mediumblue";
var tagnamecolor = "brown";
var attributecolor = "red";
var attributevaluecolor = "mediumblue";
var commentcolor = "green";
var cssselectorcolor = "brown";
var csspropertycolor = "red";
var csspropertyvaluecolor = "mediumblue";
var cssdelimitercolor = "black";
var cssimportantcolor = "red";
var jscolor = "black";
var jskeywordcolor = "mediumblue";
var jsstringcolor = "brown";
var jsnumbercolor = "red";
var jspropertycolor = "black";
elmntObj.style.fontFamily = "Consolas,'Courier New', monospace";
if (!lang) {lang = "html"; }
if (lang == "html") {elmntTxt = htmlMode(elmntTxt);}
if (lang == "css") {elmntTxt = cssMode(elmntTxt);}
if (lang == "js") {elmntTxt = jsMode(elmntTxt);}
elmntObj.innerHTML = elmntTxt;
function extract(str, start, end, func, repl) {
var s, e, d = "", a = [];
while (str.search(start) > -1) {
s = str.search(start);
e = str.indexOf(end, s);
if (e == -1) {e = str.length;}
if (repl) {
a.push(func(str.substring(s, e + (end.length))));
str = str.substring(0, s) + repl + str.substr(e + (end.length));
} else {
d += str.substring(0, s);
d += func(str.substring(s, e + (end.length)));
str = str.substr(e + (end.length));
}
}
this.rest = d + str;
this.arr = a;
}
function htmlMode(txt) {
var rest = txt, done = "", php, comment, angular, startpos, endpos, note, i;
comment = new extract(rest, "<!--", "-->", commentMode, "W3HTMLCOMMENTPOS");
rest = comment.rest;
while (rest.indexOf("<") > -1) {
note = "";
startpos = rest.indexOf("<");
if (rest.substr(startpos, 9).toUpperCase() == "<STYLE") {note = "css";}
if (rest.substr(startpos, 10).toUpperCase() == "<SCRIPT") {note = "javascript";}
endpos = rest.indexOf(">", startpos);
if (endpos == -1) {endpos = rest.length;}
done += rest.substring(0, startpos);
done += tagMode(rest.substring(startpos, endpos + 4));
rest = rest.substr(endpos + 4);
if (note == "css") {
endpos = rest.indexOf("</style>");
if (endpos > -1) {
done += cssMode(rest.substring(0, endpos));
rest = rest.substr(endpos);
}
}
if (note == "javascript") {
endpos = rest.indexOf("</script>");
if (endpos > -1) {
done += jsMode(rest.substring(0, endpos));
rest = rest.substr(endpos);
}
}
}
rest = done + rest;
for (i = 0; i < comment.arr.length; i++) {
rest = rest.replace("W3HTMLCOMMENTPOS", comment.arr[i]);
}
return rest;
}
function tagMode(txt) {
var rest = txt, done = "", startpos, endpos, result;
while (rest.search(/(\s|<br>)/) > -1) {
startpos = rest.search(/(\s|<br>)/);
endpos = rest.indexOf(">");
if (endpos == -1) {endpos = rest.length;}
done += rest.substring(0, startpos);
done += attributeMode(rest.substring(startpos, endpos));
rest = rest.substr(endpos);
}
result = done + rest;
result = "<span style=color:" + tagcolor + "><</span>" + result.substring(4);
if (result.substr(result.length - 4, 4) == ">") {
result = result.substring(0, result.length - 4) + "<span style=color:" + tagcolor + ">></span>";
}
return "<span style=color:" + tagnamecolor + ">" + result + "</span>";
}
function attributeMode(txt) {
var rest = txt, done = "", startpos, endpos, singlefnuttpos, doublefnuttpos, spacepos;
while (rest.indexOf("=") > -1) {
endpos = -1;
startpos = rest.indexOf("=");
singlefnuttpos = rest.indexOf("'", startpos);
doublefnuttpos = rest.indexOf('"', startpos);
spacepos = rest.indexOf(" ", startpos + 2);
if (spacepos > -1 && (spacepos < singlefnuttpos || singlefnuttpos == -1) && (spacepos < doublefnuttpos || doublefnuttpos == -1)) {
endpos = rest.indexOf(" ", startpos);
} else if (doublefnuttpos > -1 && (doublefnuttpos < singlefnuttpos || singlefnuttpos == -1) && (doublefnuttpos < spacepos || spacepos == -1)) {
endpos = rest.indexOf('"', rest.indexOf('"', startpos) + 1);
} else if (singlefnuttpos > -1 && (singlefnuttpos < doublefnuttpos || doublefnuttpos == -1) && (singlefnuttpos < spacepos || spacepos == -1)) {
endpos = rest.indexOf("'", rest.indexOf("'", startpos) + 1);
}
if (!endpos || endpos == -1 || endpos < startpos) {endpos = rest.length;}
done += rest.substring(0, startpos);
done += attributeValueMode(rest.substring(startpos, endpos + 1));
rest = rest.substr(endpos + 1);
}
return "<span style=color:" + attributecolor + ">" + done + rest + "</span>";
}
function attributeValueMode(txt) {
return "<span style=color:" + attributevaluecolor + ">" + txt + "</span>";
}
function commentMode(txt) {
return "<span style=color:" + commentcolor + ">" + txt + "</span>";
}
function cssMode(txt) {
var rest = txt, done = "", s, e, comment, i, midz, c, cc;
comment = new extract(rest, /\/\*/, "*/", commentMode, "W3CSSCOMMENTPOS");
rest = comment.rest;
while (rest.search("{") > -1) {
s = rest.search("{");
midz = rest.substr(s + 1);
cc = 1;
c = 0;
for (i = 0; i < midz.length; i++) {
if (midz.substr(i, 1) == "{") {cc++; c++}
if (midz.substr(i, 1) == "}") {cc--;}
if (cc == 0) {break;}
}
if (cc != 0) {c = 0;}
e = s;
for (i = 0; i <= c; i++) {
e = rest.indexOf("}", e + 1);
}
if (e == -1) {e = rest.length;}
done += rest.substring(0, s + 1);
done += cssPropertyMode(rest.substring(s + 1, e));
rest = rest.substr(e);
}
rest = done + rest;
rest = rest.replace(/{/g, "<span style=color:" + cssdelimitercolor + ">{</span>");
rest = rest.replace(/}/g, "<span style=color:" + cssdelimitercolor + ">}</span>");
for (i = 0; i < comment.arr.length; i++) {
rest = rest.replace("W3CSSCOMMENTPOS", comment.arr[i]);
}
return "<span style=color:" + cssselectorcolor + ">" + rest + "</span>";
}
function cssPropertyMode(txt) {
var rest = txt, done = "", s, e, n, loop;
if (rest.indexOf("{") > -1 ) { return cssMode(rest); }
while (rest.search(":") > -1) {
s = rest.search(":");
loop = true;
n = s;
while (loop == true) {
loop = false;
e = rest.indexOf(";", n);
if (rest.substring(e - 5, e + 1) == " ") {
loop = true;
n = e + 1;
}
}
if (e == -1) {e = rest.length;}
done += rest.substring(0, s);
done += cssPropertyValueMode(rest.substring(s, e + 1));
rest = rest.substr(e + 1);
}
return "<span style=color:" + csspropertycolor + ">" + done + rest + "</span>";
}
function cssPropertyValueMode(txt) {
var rest = txt, done = "", s;
rest = "<span style=color:" + cssdelimitercolor + ">:</span>" + rest.substring(1);
while (rest.search(/!important/i) > -1) {
s = rest.search(/!important/i);
done += rest.substring(0, s);
done += cssImportantMode(rest.substring(s, s + 10));
rest = rest.substr(s + 10);
}
result = done + rest;
if (result.substr(result.length - 1, 1) == ";" && result.substr(result.length - 6, 6) != " " && result.substr(result.length - 4, 4) != "<" && result.substr(result.length - 4, 4) != ">" && result.substr(result.length - 5, 5) != "&") {
result = result.substring(0, result.length - 1) + "<span style=color:" + cssdelimitercolor + ">;</span>";
}
return "<span style=color:" + csspropertyvaluecolor + ">" + result + "</span>";
}
function cssImportantMode(txt) {
return "<span style=color:" + cssimportantcolor + ";font-weight:bold;>" + txt + "</span>";
}
function jsMode(txt) {
var rest = txt, done = "", esc = [], i, cc, tt = "", sfnuttpos, dfnuttpos, compos, comlinepos, keywordpos, numpos, mypos, dotpos, y;
for (i = 0; i < rest.length; i++) {
cc = rest.substr(i, 1);
if (cc == "\\") {
esc.push(rest.substr(i, 2));
cc = "W3JSESCAPE";
i++;
}
tt += cc;
}
rest = tt;
y = 1;
while (y == 1) {
sfnuttpos = getPos(rest, "'", "'", jsStringMode);
dfnuttpos = getPos(rest, '"', '"', jsStringMode);
compos = getPos(rest, /\/\*/, "*/", commentMode);
comlinepos = getPos(rest, /\/\//, "<br>", commentMode);
numpos = getNumPos(rest, jsNumberMode);
keywordpos = getKeywordPos("js", rest, jsKeywordMode);
dotpos = getDotPos(rest, jsPropertyMode);
if (Math.max(numpos[0], sfnuttpos[0], dfnuttpos[0], compos[0], comlinepos[0], keywordpos[0], dotpos[0]) == -1) {break;}
mypos = getMinPos(numpos, sfnuttpos, dfnuttpos, compos, comlinepos, keywordpos, dotpos);
if (mypos[0] == -1) {break;}
if (mypos[0] > -1) {
done += rest.substring(0, mypos[0]);
done += mypos[2](rest.substring(mypos[0], mypos[1]));
rest = rest.substr(mypos[1]);
}
}
rest = done + rest;
for (i = 0; i < esc.length; i++) {
rest = rest.replace("W3JSESCAPE", esc[i]);
}
return "<span style=color:" + jscolor + ">" + rest + "</span>";
}
function jsStringMode(txt) {
return "<span style=color:" + jsstringcolor + ">" + txt + "</span>";
}
function jsKeywordMode(txt) {
return "<span style=color:" + jskeywordcolor + ">" + txt + "</span>";
}
function jsNumberMode(txt) {
return "<span style=color:" + jsnumbercolor + ">" + txt + "</span>";
}
function jsPropertyMode(txt) {
return "<span style=color:" + jspropertycolor + ">" + txt + "</span>";
}
function getDotPos(txt, func) {
var x, i, j, s, e, arr = [".","<", " ", ";", "(", "+", ")", "[", "]", ",", "&", ":", "{", "}", "/" ,"-", "*", "|", "%"];
s = txt.indexOf(".");
if (s > -1) {
x = txt.substr(s + 1);
for (j = 0; j < x.length; j++) {
cc = x[j];
for (i = 0; i < arr.length; i++) {
if (cc.indexOf(arr[i]) > -1) {
e = j;
return [s + 1, e + s + 1, func];
}
}
}
}
return [-1, -1, func];
}
function getMinPos() {
var i, arr = [];
for (i = 0; i < arguments.length; i++) {
if (arguments[i][0] > -1) {
if (arr.length == 0 || arguments[i][0] < arr[0]) {arr = arguments[i];}
}
}
if (arr.length == 0) {arr = arguments[i];}
return arr;
}
function getKeywordPos(typ, txt, func) {
var words, i, pos, rpos = -1, rpos2 = -1, patt;
if (typ == "js") {
words = ["abstract","arguments","boolean","break","byte","case","catch","char","class","const","continue","debugger","default","delete",
"do","double","else","enum","eval","export","extends","false","final","finally","float","for","function","goto","if","implements","import",
"in","instanceof","int","interface","let","long","NaN","native","new","null","package","private","protected","public","return","short","static",
"super","switch","synchronized","this","throw","throws","transient","true","try","typeof","var","void","volatile","while","with","yield"];
}
for (i = 0; i < words.length; i++) {
pos = txt.indexOf(words[i]);
if (pos > -1) {
patt = /\W/g;
if (txt.substr(pos + words[i].length,1).match(patt) && txt.substr(pos - 1,1).match(patt)) {
if (pos > -1 && (rpos == -1 || pos < rpos)) {
rpos = pos;
rpos2 = rpos + words[i].length;
}
}
}
}
return [rpos, rpos2, func];
}
function getPos(txt, start, end, func) {
var s, e;
s = txt.search(start);
e = txt.indexOf(end, s + (end.length));
if (e == -1) {e = txt.length;}
return [s, e + (end.length), func];
}
function getNumPos(txt, func) {
var arr = ["<br>", " ", ";", "(", "+", ")", "[", "]", ",", "&", ":", "{", "}", "/" ,"-", "*", "|", "%", "="], i, j, c, startpos = 0, endpos, word;
for (i = 0; i < txt.length; i++) {
for (j = 0; j < arr.length; j++) {
c = txt.substr(i, arr[j].length);
if (c == arr[j]) {
if (c == "-" && (txt.substr(i - 1, 1) == "e" || txt.substr(i - 1, 1) == "E")) {
continue;
}
endpos = i;
if (startpos < endpos) {
word = txt.substring(startpos, endpos);
if (!isNaN(word)) {return [startpos, endpos, func];}
}
i += arr[j].length;
startpos = i;
i -= 1;
break;
}
}
}
return [-1, -1, func];
}
}
$('div[contenteditable]').keydown(function(e) {
if (e.keyCode === 13) {
document.execCommand('insertHTML', false, '<br><br>');
return false;
}
});
div {
width: 300px;
height: 300px;
border: red solid;
box-sizing: border-box;
padding: 20px;
overflow: auto;
}
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<div id="myDiv" contenteditable></div>
You're missing an ending brace for your syntaxHighlight function, you have this:
function syntaxHighlight(elmnt, mode) {
var lang = (mode || "html");
var elmntObj = (document.getElementById(elmnt) || elmnt);
var elmntTxt = elmntObj.innerHTML;
var tagcolor = "mediumblue";
var tagnamecolor = "brown";
var attributecolor = "red";
var attributevaluecolor = "mediumblue";
var commentcolor = "green";
var cssselectorcolor = "brown";
var csspropertycolor = "red";
var csspropertyvaluecolor = "mediumblue";
var cssdelimitercolor = "black";
var cssimportantcolor = "red";
var jscolor = "black";
var jskeywordcolor = "mediumblue";
var jsstringcolor = "brown";
var jsnumbercolor = "red";
var jspropertycolor = "black";
elmntObj.style.fontFamily = "Consolas,'Courier New', monospace";
if (!lang) {lang = "html"; }
if (lang == "html") {elmntTxt = htmlMode(elmntTxt);}
if (lang == "css") {elmntTxt = cssMode(elmntTxt);}
if (lang == "js") {elmntTxt = jsMode(elmntTxt);}
elmntObj.innerHTML = elmntTxt;
But you want this:
function syntaxHighlight(elmnt, mode) {
var lang = (mode || "html");
var elmntObj = (document.getElementById(elmnt) || elmnt);
var elmntTxt = elmntObj.innerHTML;
var tagcolor = "mediumblue";
var tagnamecolor = "brown";
var attributecolor = "red";
var attributevaluecolor = "mediumblue";
var commentcolor = "green";
var cssselectorcolor = "brown";
var csspropertycolor = "red";
var csspropertyvaluecolor = "mediumblue";
var cssdelimitercolor = "black";
var cssimportantcolor = "red";
var jscolor = "black";
var jskeywordcolor = "mediumblue";
var jsstringcolor = "brown";
var jsnumbercolor = "red";
var jspropertycolor = "black";
elmntObj.style.fontFamily = "Consolas,'Courier New', monospace";
if (!lang) {lang = "html"; }
if (lang == "html") {elmntTxt = htmlMode(elmntTxt);}
if (lang == "css") {elmntTxt = cssMode(elmntTxt);}
if (lang == "js") {elmntTxt = jsMode(elmntTxt);}
elmntObj.innerHTML = elmntTxt;
}
Logic issue in minesweeper
--SOLVED--
I was just forgetting to reset the number of flags after each game.
I'm having issues with the number of flags in my minesweeper game. For some reason, sometimes when I flag a tile the number of flags increases by more than 1. Sometimes it increases by 3, sometimes 4, sometimes 7. I can't find the issue in my logic, so I was hoping to get another set of eyes on it.
The only sort of pattern I can see when it adds more flags than it should, i.e. the flags variable is incremented more than once, is when I flag a tile that is mostly surrounded by revealed tiles.
Javascript:
var flags = 0;
var trueFlags = 0;
function newGame() {
var cols = $("#width").val();
var rows = $("#height").val();
if (cols < 8 || rows < 8) {
return;
}else if (cols > 40 || rows > 30) {
return;
}
boardClear();
possibleBombs = (rows * cols) - 1;
numBombs = 0;
for (var i = 1; i <= rows; i++) {
for (var j = 1; j <= cols; j++) {
if (numBombs < possibleBombs) {
var q = Math.floor(Math.random() * 50);
if (0 <= q && q <= 2) {
numBombs += 1;
$("#board").append('<button type="button" class="tile" data-row = ' + i + ' data-col = ' + j + ' data-contains = ' + 0 + ' data-flagged = ' + false + '></button>').prop("revealed", false);
}
else {
$("#board").append('<button type="button" class="tile" data-row = ' + i + ' data-col = ' + j + ' data-contains = ' + 1 + 'data-flagged = ' + false + '></button>').prop("revealed", false);
}
}
else {
$("#board").append('<button type="button" class="tile" data-row = ' + i + ' data-col = ' + j + ' data-contains = ' + 1 + ' data-flagged = ' + false + '></button>').prop("revealed", false);
}
}
$("#board").append("<br/>");
}
$(".controls h2").text("Bombs to go: " + numBombs);
$(".tile").css("background-color", "white");
$(".tile").width(15);
$(".tile").height(15);
console.log("bombs: " + numBombs, "possible: " + possibleBombs);
$(".tile").click(function(e) {
if (e.shiftKey) {
flagKey($(this));
$(".controls h2").text("Bombs to go: " + (numBombs - flags));
}
else if ($(this).data("contains") == 0) {
console.log("you lose");
boardClear();
newGame();
return;
}
else {
revealNeighbors($(this));
// if (gameWon() == true) {
// alert("You have won!");
// newGame();
// }
return;
}
});
}
function boardClear() {
$("#board").empty();
}
function revealNeighbors(tile) {
var cordsx = tile.data("row");
var cordsy = tile.data("col");
// tile has bomb
if(tile.data("contains") == 0) {return;}
// tile is flagged
else if(tile.data("flagged") == true){return;}
// tile has been revealead already
else if(tile.prop("revealed") == true) {return;}
// reveal the tile
var tileBombs = nearbyBombCount(tile);
tile.prop("revealed", true);
tile.text(tileBombs);
tile.css("background-color", "grey");
if (tileBombs == 0){tile.text("");}
else if(tileBombs != 0) {return;}
for (var i = -1; i <= 1; i++) {
for (var j = -1; j <= 1; j++) {
if (cordsx + i < 1 || cordsy + j < 1) {continue;}
else if (cordsx + i > $("#width").val() || cordsy + j > $("#height").val()) {continue;}
else if (i == 0 && j == 0) {continue;}
var neighbor = $('.tile[data-row="' + (cordsx+i) + '"][data-col ="'+(cordsy+j)+'"]');
revealNeighbors(neighbor);
}
}
}
function nearbyBombCount(tile) {
var cx = tile.data("row");
var cy = tile.data("col");
var nearbyBombs = 0;
for (var n = -1; n < 2; n++) {
for (var m = -1; m < 2; m++) {
if (cx + n < 1 || cy + m < 1) {continue;}
else if (cx + n > $("#width").val() || cy + m > $("#height").val()) {continue;}
var neighbor = $('.tile[data-row="' + (cx+n) + '"][data-col ="'+(cy+m)+'"]');
if (neighbor.data("contains") == 0) {
nearbyBombs++;
}
}
}
return nearbyBombs;
}
function flagKey(tile) {
// tile is already revealed
if (tile.data("revealed") == true) {
return;
}
// tile is already flagged
else if (tile.data("flagged") == true) {
tile.data("flagged", false);
tile.css("background-color", "white");
flags--;
// contains bomb
if (tile.data("contains") == 0) {
trueFlags--;
}
return;
}
// tile not flagged
else if (tile.data("flagged") == false) {
flags++;
tile.data("flagged", true);
tile.css("background-color", "red");
// contains bomb
if (tile.data("contains") == 0) {
trueFlags++;
console.log(trueFlags);
}
}
else {
return;
}
}
My guess is that there's something wrong with my revealNeighbors() function or it's some scope issue, but I can't for the life of me figure out what it is.
Hi I change a litle and works fine
<html>
<head>
<style>
.tile{padding:5px;}
</style>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
</head>
<body>
Width : <input type="text" id="width" value="15" /> Height :<input type="text" id="height" value="15" /><input type="button" onclick="newGame()" id="btnstart" value="start" />
<br />
<div>
<div id="board" >
</div>
</div>
<script>
var flags = 0;
var trueFlags = 0;
function newGame() {
var cols = $("#width").val();
var rows = $("#height").val();
if (cols < 8 || rows < 8) {
return;
}else if (cols > 40 || rows > 30) {
return;
}
boardClear();
possibleBombs = (rows * cols) - 1;
numBombs = 0;
for (var i = 1; i <= rows; i++) {
for (var j = 1; j <= cols; j++) {
if (numBombs < possibleBombs) {
var q = Math.floor(Math.random() * 50) + 1;
if (q <= 2) {
numBombs += 1;
$("#board").append('<button type="button" class="tile" data-row = ' + i + ' data-col = ' + j + ' data-contains = ' + 0 + ' data-flagged = ' + false + '></button>').prop("revealed", false);
}
else {
$("#board").append('<button type="button" class="tile" data-row = ' + i + ' data-col = ' + j + ' data-contains = ' + 1 + 'data-flagged = ' + false + '></button>').prop("revealed", false);
}
}
else {
$("#board").append('<button type="button" class="tile" data-row = ' + i + ' data-col = ' + j + ' data-contains = ' + 1 + ' data-flagged = ' + false + '></button>').prop("revealed", false);
}
}
$("#board").append("<br/>");
}
$(".controls h2").text("Bombs to go: " + numBombs);
$(".tile").css("background-color", "white");
$(".tile").width(15);
$(".tile").height(15);
console.log("bombs: " + numBombs, "possible: " + possibleBombs);
$(".tile").click(function (e) {
if (e.shiftKey) {
flagKey($(this));
$(".controls h2").text("Bombs to go: " + (numBombs - flags));
}
else if ($(this).data("contains") == 0) {
console.log("you lose");
boardClear();
newGame();
return;
}
else {
revealNeighbors($(this));
// if (gameWon() == true) {
// alert("You have won!");
// newGame();
// }
return;
}
});
}
function boardClear() {
$("#board").empty();
}
function revealNeighbors(tile) {
var cordsx = tile.data("row");
var cordsy = tile.data("col");
// tile has bomb
if(tile.data("contains") == 0) {return;}
// tile is flagged
else if(tile.data("flagged") == true){return;}
// tile has been revealead already
else if(tile.prop("revealed") == true) {return;}
// reveal the tile
var tileBombs = nearbyBombCount(tile);
tile.prop("revealed", true);
tile.text(tileBombs);
tile.css("background-color", "grey");
if (tileBombs == 0){tile.text("");}
else if(tileBombs != 0) {return;}
for (var i = -1; i <= 1; i++) {
for (var j = -1; j <= 1; j++) {
if (cordsx + i < 1 || cordsy + j < 1) {continue;}
else if (cordsx + i > $("#width").val() || cordsy + j > $("#height").val()) {continue;}
else if (i == 0 && j == 0) {continue;}
var neighbor = $('.tile[data-row="' + (cordsx+i) + '"][data-col ="'+(cordsy+j)+'"]');
revealNeighbors(neighbor);
}
}
}
function nearbyBombCount(tile) {
var cx = tile.data("row");
var cy = tile.data("col");
var nearbyBombs = 0;
for (var n = -1; n < 2; n++) {
for (var m = -1; m < 2; m++) {
if (cx + n < 1 || cy + m < 1) {continue;}
else if (cx + n > $("#width").val() || cy + m > $("#height").val()) {continue;}
var neighbor = $('.tile[data-row="' + (cx+n) + '"][data-col ="'+(cy+m)+'"]');
if (neighbor.data("contains") == 0) {
nearbyBombs++;
}
}
}
return nearbyBombs;
}
function flagKey(tile) {
// tile is already revealed
if (tile.data("revealed") == true) {
return;
}
// tile is already flagged
else if (tile.data("flagged") == true) {
tile.data("flagged", false);
tile.css("background-color", "white");
flags--;
// contains bomb
if (tile.data("contains") == 0) {
trueFlags--;
}
return;
}
// tile not flagged
else if (tile.data("flagged") == false) {
flags++;
tile.data("flagged", true);
tile.css("background-color", "red");
// contains bomb
if (tile.data("contains") == 0) {
trueFlags++;
console.log(trueFlags);
}
}
else {
return;
}
}
</script>
</body>
</html>
TypeError: entry is undefined
What is the problem with this error
TypeError: entry is undefined
This error appears in the Firefox browser
<script type='text/javascript'>
//<![CDATA[
function showlatestpostswiththumbs(json) {
document.write('<div class="terbaru">');
for (var i = 0; i < posts_no; i++) {
var entry = json.feed.entry[i];
var posttitle = entry.title.$t;
var postsurl;
if (i == json.feed.entry.length) break;
for (var k = 0; k < entry.link.length; k++) {
if (entry.link[k].rel == 'replies' && entry.link[k].type == 'text/html') {
var commentstext = entry.link[k].title;
var commentsurl = entry.link[k].href;
}
if (entry.link[k].rel == 'alternate') {
postsurl = entry.link[k].href;
break;
}
}
var recenthumb;
try {
recenthumb = entry.media$postImageUrl.url;
} catch (error) {
s = entry.content.$t;
a = s.indexOf("<img");
b = s.indexOf("src=\"", a);
c = s.indexOf("\"", b + 5);
d = s.substr(b + 5, c - b - 5);
if ((a != -1) && (b != -1) && (c != -1) && (d != "")) {
recenthumb = d;
} else recenthumb = 'https://2.bp.blogspot.com/-C3Mo0iKKiSw/VGdK808U7rI/AAAAAAAAAmI/W7Ae_dsEVAE/s1600/no-thumb.png';
}
document.write('<div class="mas-elemen">');
document.write('<img src="' + recenthumb + '"/>');
document.write('<h6>' + posttitle + '</h6>');
document.write('</div>');
}
document.write('</div>');
}
//]]>
</script>
<script style='text/javascript'>
var posts_no = 10;
var showpoststhumbs = true;
var readmorelink = true;
</script>
<script src="/feeds/posts/default/?orderby=published&alt=json-in-script&callback=showlatestpostswiththumbs"></script>
This error is causing because of this line var entry = json.feed.entry[i]; because the json you passed into the function showlatestpostswiththumbs doesn't have a value at json.feed.entry[i], so entry is now undefined, please give correct json into that function (showlatestpostswiththumbs), thats all I can give with the info from your question
Remove duplicate words from a string without converting it into array
from the below code I'm trying to get common words(from two strings given) without converting the strings into array. The below code is getting and displaying the common words but the problem is, this code is not removing all the duplicates as it shows all the common words without removing duplicates. I tried searching, but the solution is to use split() and filter(). Is there any other way to remove duplicates.
Thanks so much in advance.
function common() {
var str1 = "is hello and he is the only hello is"
var str2 = "is hello you and is and he and is the only";
var min = 0;
var max = 0;
var count = 0;
var count1 = 0;
var count2 = 0;
var out = '';
var out2 = '';
var out3 = '';
var len1 = str1.length;
var len2 = str2.length;
var output = '';
var temp = 0;
var temp1 = 0;
for (m = 0; m < str1.length; m++) {
temp1 = 0;
if (str1.charAt(m) == " " || m == str1.length - 1) {
count1++;
if (m == str1.length - 1) {
out1 = str1.slice(temp, m + 1);
} else {
out1 = str1.slice(temp, m);
}
for (i = temp1; i < str2.length; i++) {
if (str2.charAt(i) == " " || i == str2.length - 1) {
if (i == str2.length - 1) {
out2 = str2.slice(temp1, i + 1);
} else {
out2 = str2.slice(temp1, i);
}
temp1 = i + 1;
if (out1 == out2) {
if (out3.indexOf(out1) == -1) {
out3 += out1 + ' ';
} else if (out3.indexOf(out1) >= 0) {
var r = out3.indexOf(out1);
while (out3.charAt(r) != " ") {
r++;
}
if (r != out1.length) {
out3 += out1 + ' ';
}
}
}
}
}
temp = m + 1;
}
}
console.log(out3);
out = document.getElementById("tarea3");
out.value = out3;
}
<textarea id="tarea"></textarea>
<textarea id="tarea2"></textarea>
<textarea id="tarea3"></textarea>
<button type="button" onclick="common()">Run</button>
No arrays no regex you can get the common words like this. The rest is up to your processing.
var str1 = "is hello and he is the only hello is",
str2 = "is hello you and is and he and is the only",
lut = {},
stc = "",
i = 0;
while (i <= str1.length) {
if (str1[i] !== " " && i < str1.length) {
stc+=str1[i++];
} else {
lut[stc] = "unmatch";
stc = "";
++i;
}
}
i = 0;
stc = "";
while (i <= str2.length) {
if (str2[i] !== " " && i < str2.length) {
stc+=str2[i++];
} else {
lut[stc] = lut[stc] ? "common" : "unmatch";
stc = "";
++i;
}
}
console.log(lut);
How to use AJAX or JSON in this code?
I am creating a website application that allows users to select a seat, if it is not already reserved, and reserve it.
I have created a very round about way of getting the seats that are previously reserved using iFrames, however that was temporarily, now I need to make it secure and "proper javascript code" using proper practices. I have no clue what AJAX (or JSON) is, nor how to add it to this code, but it needs to get the file "seatsReserved"+this.id(that is the date)+"Que.html" and compare the string of previously reserved seats to see which class to make the element. If this is horrible, or if any of the other things could work better, I am open to criticism to everything. Thank you all!
Here is the javascript code:
A little side note, all of the if statements are due to different amount of seats in each row
<script>
var i = " 0 ";
var counter = 0;
var leng=0;
document.getElementById("Show1").addEventListener("click", changeDay);
document.getElementById("Show2").addEventListener("click", changeDay);
document.getElementById("Show3").addEventListener("click", changeDay);
function changeDay() {
var iFrame = document.getElementById("seatList");
iFrame.src = "seatsReserved" + this.id + "Que.html";
document.getElementById('date').innerHTML = this.id;
var seatsTaken = iFrame.contentWindow.document.body.innerHTML;
var k = 0;
let = 'a';
var lc = 0;
for (lc = 1; lc <= 14; lc++) {
if (lc == 1) {
leng = 28;
}
else if (lc == 2) {
leng = 29;
}
else if (lc == 3) {
leng = 32;
}
else if (lc == 4 || lc == 6 || lc == 12 || lc == 14) {
leng = 33;
}
else if (lc == 5 || lc == 13) {
leng = 34;
}
else if (lc == 8 || lc == 10) {
leng = 35;
}
else {
leng = 36;
}
for (k = 1; k <= leng; k++) {
if (seatsTaken.indexOf((" " +
let +k + " ")) <= -1) {
seat = document.getElementById(let +k);
seat.removeEventListener("click", selectedSeat);
}
else {
document.getElementById(let +k).className = "openseat";
document.getElementById(let +k).removeEventListener("click", doNothing);
}
}
let = String.fromCharCode(let.charCodeAt(0) + 1);
}
}
function loadChanges() {
var iFrame = document.getElementById("seatList");
var seatsTaken = iFrame.contentWindow.document.body.innerHTML;
var k = 0;
let = 'a';
var lc = 0;
var leng = 0;
for (lc = 1; lc <= 14; lc++) {
if (lc == 1) {
leng = 28;
}
else if (lc == 2) {
leng = 29;
}
else if (lc == 3) {
leng = 32;
}
else if (lc == 4 || lc == 6 || lc == 12 || lc == 14) {
leng = 33;
}
else if (lc == 5 || lc == 13) {
leng = 34;
}
else if (lc == 8 || lc == 10) {
leng = 35;
}
else {
leng = 36;
}
for (k = 1; k <= leng; k++) {
if (seatsTaken.indexOf((" " +
let +k + " ")) <= -1) {
seat = document.getElementById(let +k);
seat.addEventListener("click", selectedSeat);
seat.className = "openseat";
}
else {
document.getElementById(let +k).className = "notAvailible";
document.getElementById(let +k).addEventListener("click", doNothing);
}
}
let = String.fromCharCode(let.charCodeAt(0) + 1);
}
i = " 0 ";
counter = 0;
document.getElementById("seatString").innerHTML = i;
document.getElementById("getSeats").value = i;
document.getElementById("seatnums").innerHTML = counter;
}
i = document.getElementById("seatString").innerHTML;
counter = document.getElementById("seatnums").innerHTML;
function selectedSeat() {
var w = this.id;
var l = (" " + w);
var b = (" " + w + " ");
if (counter < 5) {
if (i.indexOf(b) <= 0) {
this.className = "closedseat";
i = i + b;
i = i.replace(" 0 ", " ");
document.getElementById("seatString").innerHTML = i;
document.getElementById("getSeats").value = i;
counter = counter + 1;
document.getElementById("seatnums").innerHTML = counter;
}
else if (i.indexOf(b) > 0) {
this.className = "openseat";
i = i.replace(b, "");
document.getElementById("seatString").innerHTML = i;
document.getElementById("getSeats").value = i;
counter = counter - 1;
document.getElementById("seatnums").innerHTML = counter;
}
}
else if (i.indexOf(b) > 0) {
this.className = "openseat";
i = i.replace(b, "");
document.getElementById("seatString").innerHTML = i;
document.getElementById("getSeats").value = i;
counter = counter - 1;
document.getElementById("seatnums").innerHTML = counter;
}
}
function doNothing() {
}
var rannum = Math.random() * 1000;
document.getElementById('getConfirmation').value = rannum;
</script>